Rotary motor



July 3, 192s. y

1,675,693 l. cAvAzos ROTARY MOTOR Filed Aug. 24, 1925 s sheets-sneet 2my W adwzvazmsw xNvEN-ron W BY ATTORNEY July3,192s. 1,675,693

l. CAVAZOS VR'IARY MOTOR Filed Aug. 24. 192,5 3 Sheets--Sheet 3 li I r Ne r l Y.

1 f m Q R a Q E b 5 v l.

INVENTOR Patented July 3, 1928.

UNITED STATES ISIDORE CAVAZOS, OF KINGSVILLE, TEXAS.

ROTARY MOTOR.

Application led August 24, 1925.

This invention relates to engines and has for its object the provisionof a rotary engine capable of being operated by combustion, pressure andsteam and designed to develop maximum power and efficiency.

The nature and advantages of the invention will be better' understoodwhen the following detailed description is read in conncction with theaccompanying drawings, the invention residing in the construction,combination and arrangement of parts as claimed. j

In the drawings: i l

Figure l is an end elevation of the engine constructed in accordancewith the present invention.

Figure 2 is a sectional view therethrough.

Figure 3 is a side elevation.

Figure 4 is an enlarged sectional View through the fuel inlet and thevalve mechanism for controlling the admittance of fuel to the engine. j

Figure 5 is a sectionalview on line 5-5 of Figure 2.

Figure 6 is a longitudinal sectional view through an air inlet valve.

Referring to the drawing in detail, 10 indicates an engine casing ofcylindrical contour in cross section, and supported upon a suitable base11. If desired, this casing may be made in two parts bolted or otherwises ecured together as at 12. Arranged within the casing 10 is a camshaped member 13, and if desired this member may form an integral partof the casing without departing from the spirit of the invention.Mounted to rotate within the casing is a rotor 14. fixed upon a suitableshaft 15, and the rotor is provided with a plurality of pockets 16 ineach of which is arranged a sliding piston 17. The pistons are normallyinfluenced by springs 18 which tend to project the pistons outwardlybeyond the periphery of the rotor, and into engagement with the wall ofthe casing 10 or the cam-shaped member 13. The rotor is, of course,eccentrically mounted and is adapted to contact the cam-shaped member 13at one point as shown in Figure 2. It will also be noted that eachpiston 17 has its outer end rounded or curved to con form to the camsurface of the member 13, as this member is utilized to move the pistonswithin their pockets when they are brought into engagement therewith.

Arranged exteriorly of one end of the en gine is a fuel pump 19 and anair pump 20,

Serial No. 52,919.

these pumps being arranged at diametrically opposite points and operateto supply air and fuel to a pipe 21 which i3 threaded into the enginecasing 10, communicating with a bore 22 formed in the casing and openinginto a bore 23 formed in the cam-shaped member 13. rlfhe bore is formedto provide a valve seat 2t which is normally engaged by a valve 25, thestem of which is indicated at 26 and arranged to slide in a passage 27.A valve operating rod 23 is ter minally connected with the stem of thevalve,- and arranged longitudinally within the pipe 2l, being pivotedtherein at a point between its ends at 29. The outer end of thisoperating element 23 is connected with a reciprocating rod 30 adapted tobe actuated to control the movements of the valve incident to therotation of the rotor 14. In other words, the lower end of this rod isconnected with one end of an angularly shaped lever 31 pivoted at apoint between its ends as at 32 upon a suitable bracket 33 arranged atone end of the engine, while the other end of the lever 31 carries aroller 3e which is adapted to cooperate with a cam 35 carried by theadjacent end of the rotor shaft 15. Consequently, as the shaft 15rotates the lever 31 is intermittently locked upon its pivot in adirection to lower the operating' element 38, the latt-er in turnclosing the valve 25 against its seat 24. Now, when the roller 34 of thesaid lever 31 leaves the high point of the cam 35, the weight of thevalve 25 is suiiicient to allow the valve to gravitate to an openposition, and thus admita charge of fuel into the engine casing throughthe port 23. Leading from the fuel pump 19 is a pipe 36 which isconnected to an elbow 37 attached to one end of the pipe 21, as shown inFigure fl, while leading from the air 'pump 20 is a supply pipe 38 whichis terminally connected with a nipple 39 projecting from the end of theelbow 37, as illustrated. Vhile any suitable means may be employed foroperating the respective pumps; I preferably make use of a gear 40 whichis carried by the rotary shaft 15, and which gear meshes with pinions LL1 and 42, respectively. Each of these pinions is connected with thepiston rod 43 of the adjacent pump, so that the said pumps aresimultaneously operated incident to the rotation of the shaft 15, thuscontinuously supplying the pipe 21 with a charge of fuel. Of course, thefuel is iny ing V45.

' valve `in its entirety being utilized to prevent the formation of avacuum Within the enginecasing, as Vwill be readily appreciated. lt'willalso be noted upon vinspection of Figure 2 that I rnaliieuseoi'Qa-curved guide t7 Vagainst vwhich :the pistons 17 are adapted to besingly Vprojected as they leave the cani surface ot" the .member 1,7,thus guiding` the piston intoeontactvvith the linner Wall ofthe v casinginV a gradual manner, thus overcoining severe impacts `between ythepiston and .the casing l0. .Garriedby-tlie cani-shaped "unember l'isaresilient strip of any suitable -inaterial `indicated atv i9, theV lowerend ot which is voffset kas at() 'to engage the adj acent 'endoi` the.guide 47, thus sealing the .cylinder at this point to prevent theescape Vvor ba'cli pressure of thetuel When it is initially admitted.into fthe cylinderY 10. The

`etructureinits: entirety provides an engine Whichcan be operated to:produce a high de- 'griee 'of eiiic'iency, and manifestly developniaxiniui'n power with the consumption ot a inininnnn ainountoif iuel.

`lVhile it is believed that troni the loregoing description the natrreand :ulvantages oit the invention `will be readily apparent, l desire tohave it understood that l do not 'li'niit myself to what is herein shownand described, and that such changes nniy be resorted to when desired asiall within the scope ot' what is claini-ed.

lllaving,l thurs described the invention, what claimed as new, is:-

The combination with an engine casing having a fuel inlet bore lorniedto provide a `valve seat,of ai Yl'uel supply pipe threaded into thecasing and connnunicating with said bore, a sliding valve norinallyengaging said seat and including` a stein, .said casing` beingrecessedto yreceive said stein, valve operating; rod arranged within the supplypipe, and pivoted between ite` vende, and connect-ed with said stein, asliding rod operating` through an opening` in thcsupply pipe andconnected with the adjacent end ot the valve operating rod, a bracket, arocking lever pivoted on said bracket and connected with said sliding'rod, \a rotary shaft, and a cani carried by the shaft for intermittentlyV.rocking said rlever to open the valve, said "valve gravitatingl to itsclosed `position after each operation.

lntestilnony Whereoi' I aiiix my signature.

Rnv. ISIDORE CAVAZOS.

